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#!/usr/bin/env bash | |
# Exit on error | |
set -e | |
# On MacOS, make sure shuf command is available | |
if uname | grep -q Darwin | |
then | |
which brew &> /dev/null || echo "please install brew: https://brew.sh" && exit 1 | |
which gshuf &> /dev/null || brew install coreutils | |
alias shuf=gshuf | |
fi | |
# All possible combinations of 4 letters, | |
# each on one line for streaming and in random order | |
combinations="$(echo {a..z}{a..z}{a..z}{a..z} | tr " " "\n" | shuf)" | |
echo "possibilities: $(echo "$combinations" | wc -l)" | |
# Filter to only names that 404 on github.com, | |
# 10 in parallel (might still take a while), | |
# and write them to a file | |
echo "$combinations" | xargs -P10 -I{} sh -c "curl -sfI https://github.com/{} > /dev/null || echo {}" > github.txt | |
echo "available on Github: $(wc -l github.txt)" | |
# Do the same thing for twitter.com | |
cat github.txt | xargs -P10 -I{} sh -c "curl -sfI https://twitter.com/{} > /dev/null || echo {}" > github-twitter.txt | |
echo "available on Github and Twitter: $(wc -l github-twitter.txt)" | |
echo "See *.txt files for available names" |
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I tried this on macOS Catalina but doesn't work, nothing outputs. Any clue?